GLAST LAT Project March 24, 2003

3A Tracker Peer Review, WBS 4.1.4 1

GLAST Large Area Telescope:GLAST Large Area Telescope:

Tracker SubsystemWBS 4.1.4

3A: Engineering Model Tower Status

Thomas BordenStanford Linear Accelerator CenterTracker Subsystem Engineer

tborden@slac.stanford.edu

Gamma-ray Large Gamma-ray Large Area Space Area Space TelescopeTelescope

GLAST LAT Project March 24, 2003

3A Tracker Peer Review, WBS 4.1.4 2

AgendaAgenda

• Tale of Two Towers• Mini Tower• Structural/Thermal Tower• Schedule

GLAST LAT Project March 24, 2003

3A Tracker Peer Review, WBS 4.1.4 3

Tale of Two TowersTale of Two Towers

Carbon-Fiber Wall

• Tracker EM consists of Two Towers– Mini-Tower

• Five trays

• 3 full X-Y detector planes

• Flight like flexure attach

– Structural/Thermal

• Full Form and Fit Tower

• Full thermal dissipation

• Vibration and thermal vacuum tested

• Shipped in double container with data logger

GLAST LAT Project March 24, 2003

3A Tracker Peer Review, WBS 4.1.4 4

Mini TowerMini Tower

GLAST LAT Project March 24, 2003

3A Tracker Peer Review, WBS 4.1.4 5

Structural/Thermal TowerStructural/Thermal Tower

GLAST LAT Project March 24, 2003

3A Tracker Peer Review, WBS 4.1.4 6

ScheduleSchedule

• Mini-Tower trays arrived March 21– Mini Tower in assembly at SLAC– Projected delivery to I&T March 28

• Structural/Thermal Tower scheduled to be delivered to I&T July 1– Bottom Tray Fabrication starting– All other trays complete– Sidewalls material on order– Assembly complete June 1– Vibration testing complete June 10 (LAT-TD-01841)– Thermal vacuum testing complete June 27 (LAT-TD-01842)– Tower shipped to SLAC

• Structural/Thermal Tower delivered with Shipping case and lifting fixture